Well I mean the original bandai Japan versions.
but I would be interested to know the prices in other countries as well as the Irwin and world versions.
Well for the Bandai Japan Gold Star Locket 1992/1995, those sell for $600+ in very good to mint condition. You can expect it to be more if it's mint.
I bought my gold star locket about a week ago for $330. It was listed as a mint condition locket and has never been taken out of the box. The box says Bandai Made in China 1994.
I know most star lockets sell between $300-800 depending where and when it was made.
Here's a guide to tell you what kinds there are: http://blog.sailorastera.com/2011/04/st ... ocket.html
Any locket that wasn't made in Japan, you can most likely find it for cheaper than $600.
I wouldn't pay more than $400 for a locket that wasn't the original Japan version. That's just me though. xD